Issue Tracker 1.5.0

This contains all the fixes and features of the 1.4.2 and 1.3.4 releases.

~ Combine Joomla 2.5 and Joomla 3.2 versions into a single branch.

+ Add Advanced Change history auditing option.

+ Add optional filter to front end people list display.

~ Code inspection resulting in cleaner code, CSS etc.

~ Latest Issues module included in standard distribution.

# Fix sorting on id in log display.

# Fix save of new projects on some Joomla installations.

# Correct Admin project save method.

# Correct project state filter.

+ Add PHP CLI Cron tasks.

+ Add Front end invoked CRON tasks.